Lumbar posture device
Power Cushion
Patented training cushion with a central groove and half-circle cutout that supports the lumbar spine while you perform sit-ups and pelvic tilts.
Back Posture Correctors
Back posture correctors
Align your spine for better posture, power, and endurance.
Use Power Cushion sit-ups, pelvic tilts, and targeted spinal fitness guides to rebuild the natural S-shaped curve in your lower back and protect joints under load.
S-shaped spinal posture Lower-back pain & fatigue Athletic strength & stamina
The Power Cushion system was refined in professional football and Olympic training rooms. Athletic trainer Ron O’Neil shared that players relied on the Power Cushion because it helped them keep better posture through an entire season.
Pro-level research
From NFL locker rooms to everyday back posture.
Beginning in the mid-1980s, Dr. John S. Scherger led a long-term project to figure out how to train and treat the spine so it could tolerate contact sports and still stay strong. The lower back became the main focus.
The development team included experts like Jennifer Stone and Bob Beeten from the U.S. Olympic Training Center, Dick Smith from York Barbell, and long-time New England Patriots athletic trainer Ron O’Neil. Their challenge was simple but demanding: keep players’ curves deep and powerful instead of watching backs flatten and stiffen as the season went on.
They refined sit-ups, pelvic tilts, and Power Cushion drills so the global lumbar curve and the posture of each individual vertebra could be improved rather than worn down by compression and shear forces.
Why posture matters
The S-shaped spine: less stress, more usable strength.
Players with a deep lower-back curve consistently showed more speed, endurance, and hitting power. When trauma and poor training flattened that curve, discs and joints took more load, nerves were pinched, and performance fell off.
Back posture correctors in this collection are built around one idea: restore and maintain the S-shaped spine so forces are distributed as compression instead of damaging shear.
To dive deeper into the physics and comparisons of good vs. bad posture, explore the full S-shaped spine article and posture graphics.
Back posture correctors & guides
Building and maintaining the lower-back curve: Power Cushion devices, force applicators, and home-study PDFs based on Dr. Scherger’s spinal fitness research.
Core & sit-ups
Ab Exercises for Bad Back PDF: The Correct Sit-Up
A detailed PDF guide that shows how to perform sit-ups in a spine-friendly way using the Power Cushion or a rolled sleeping bag.
$99.99
Neck flexion training
Neck Strengthening Exercises PDF: Neck Flexion
Progressive Neck Flexion program that can be done with the Neck Shaper or just your hands, designed to build neck strength and support the S-shaped spine.
$99.99
Athlete posture
How to Improve Athlete Performance PDF: Spinal Curve
Explains the link between spinal curvature and athletic ability, shows how to spot poor posture, and outlines tests used when selecting and training top-level athletes.
$99.99
Core stability
Core Stability Exercises PDF & Exercises to Avoid
A spinal fitness roadmap that highlights the best core exercises to support Correct Neutral Spine and flags common movements that overload discs.
$99.99
Spinal twist prep
Home Exercise Program for Low Back Pain PDF: Spinal Twist
Step-by-step guide to the spinal twist exercise that helps loosen the spine, improve disc hydration, and prepare the back for posture work.
$99.99
Pelvic tilt training
Lower Back Strengthening Exercises PDF: Power Cushion or Sleeping Bag
Focuses on the pelvic tilt exercise performed over the Power Cushion or a sleeping bag, strengthening the lower back and improving segmental posture.
$99.99
How it works
Build and keep a powerful lower-back curve.
The Back Posture Correctors collection combines equipment and step-by-step PDFs into a simple sequence: evaluate posture, train the curve with Power Cushion drills, then maintain it with neck and back programs at home.
- Step 1 – Learn the S-shaped spine concept: Review how correct posture reduces joint forces and improves strength. Use the Training to Avoid Common Sports Injuries.
- Step 2 – Sit-up over the Power Cushion: Perform sit-ups as outlined in the Ab Exercises for Bad Back PDF.
- Step 3 – Pelvic tilt & strengthening: Use the Lower Back Strengthening PDF.
- Step 4 – Neck flexion & global posture: Train with the Neck Strengthening Exercises PDF.
- Step 5 – Maintain curves & avoid risky moves: Use the Core Stability and Home Exercise Program for Low Back Pain PDFs.
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